- 'rss' => 'application/rss+xml',
- 'rss2' => 'application/rss+xml',
- 'atom' => 'application/atom+xml',
- 'rdf' => 'application/rdf+xml'
+ 'rss' => 'application/rss+xml',
+ 'rss2' => 'application/rss+xml',
+ 'rss-http' => 'text/xml',
+ 'atom' => 'application/atom+xml',
+ 'rdf' => 'application/rdf+xml'